Abstract
We report on the temperature variation of spin-orbit torques in perpendicularly magnetized W/CoFeB bilayers. Harmonic Hall voltage measurements in perpendicularly magnetized CoFeB reveal increased longitudinal and transverse effective magnetic field components at low temperatures. The damping-like spin-orbit torque reaches an efficiency of 0.55 at 19 K. Scanning transmission electron microscopy and X-ray reflectivity measurements indicate that considerable interface mixing between W and CoFeB may be responsible for strong spin-orbit interactions.
Original language | English |
---|---|
Article number | 062407 |
Pages (from-to) | 1-4 |
Journal | Applied Physics Letters |
Volume | 109 |
Issue number | 6 |
DOIs | |
Publication status | Published - 8 Aug 2016 |
MoE publication type | A1 Journal article-refereed |